A support assembly, a battery module, a battery pack and an electrical device

Abstract

The application provides a support assembly, a battery module, a battery pack and a power utilization device, and relates to the technical field of batteries. The support assembly is arranged on a battery of a battery module and is located at one side of an electrode end of the battery. The support assembly comprises a support plate structure and a cover plate. The support plate structure comprises a support plate body, a plurality of escape port structures and a first baffle. The plurality of escape port structures are distributed on the support plate body at intervals in a first direction. The escape port structures are in communication with the positions of explosion-proof valves of the battery. The escape port structures protrude and extend in a direction away from the battery relative to the support plate body. The first baffle is arranged on the support plate body at intervals in a second direction and is located at opposite sides of the escape port structures. The cover plate body is connected to the end face of the support plate structure away from the battery. The circumferential walls of the escape port structures, the first baffles and the cover plate body respectively enclose drainage channels. The escape port structures are in communication with the drainage channels. The application can reduce the accident range of the battery module.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a support assembly, battery module, battery pack and electrical equipment. Background Technology

[0002] As a core component of electrical devices such as energy storage systems, the safety of battery modules is of paramount importance. Currently, battery modules are integrated units formed by assembling multiple batteries in series and parallel, used to store and provide electrical energy.

[0003] In related technologies, a battery module mainly includes multiple batteries, multiple conductive connectors, and an insulating support plate. The electrode posts of adjacent batteries are electrically connected via conductive connectors. These connectors can be electrically connected to external voltage and temperature detection modules via detection harnesses to transmit the voltage and temperature signals of the corresponding batteries to these modules. The insulating support plate is positioned above the batteries and serves as a support for the conductive connectors and wiring harnesses. Each battery is equipped with an explosion-proof valve, and the insulating support plate has a corresponding clearance opening. When the battery experiences thermal runaway during charging and discharging, causing its internal pressure to increase, the electrolyte inside the battery will be ejected from the explosion-proof valve through the clearance opening, thus achieving pressure relief and explosion prevention.

[0004] However, the inventors recognized that in actual use, if some batteries eject electrolyte due to thermal runaway, the electrolyte will directly spread to the electrode posts of other adjacent batteries or other adjacent battery modules, which may cause accidents such as high temperature and short circuit in the battery module, thereby expanding the scope of the battery module accident. Summary of the Invention

[0005] This application provides one or more embodiments of a bracket assembly, a battery module, a battery pack, and an electrical device to solve or at least partially alleviate the problem in the related art where electrolyte spread leads to high temperatures, short circuits, and other accidents in the battery, thereby expanding the scope of battery module failures.

[0006] A first aspect of this application provides a support assembly, which adopts the following technical solution: A bracket assembly is provided for mounting on a battery of a battery module and located on the electrode side of the battery. The bracket assembly includes a support plate structure and a cover plate. The support plate structure includes a support plate body, a plurality of clearance structures, and a first baffle. The support plate body is used to mount the battery. The plurality of clearance structures are spaced apart on the support plate body along a first direction. The clearance structures correspond to and communicate with the position of the explosion-proof valve of the battery. The clearance structures protrude and extend relative to the support plate body in a direction away from the battery. The first baffle is disposed at intervals on the support plate body along the second direction corresponding to the arrangement direction of the positive and negative ends and is located on opposite sides of the clearance structure. The cover plate includes a cover plate body, which is connected to the end face of the support plate structure away from the battery. The peripheral wall of the clearance structure and the first baffle and the cover plate body respectively form a drain channel. The clearance structure is connected to the drain channel.

[0007] By adopting the above technical solution, the battery module includes multiple batteries arranged along the first direction. Each battery has an explosion-proof valve and electrical terminals (i.e., positive and negative terminals distributed at intervals along the second direction). The entire support plate structure can be located between the positive and negative terminals of the battery. Multiple clearance structures are distributed at intervals along the first direction on the support plate body. Each clearance structure corresponds to and is connected to the explosion-proof valve position of each battery.

[0008] The clearance structure extends outward from the support plate body in a direction away from the battery, forming a raised "dam" above the battery's explosion-proof valve. When the battery malfunctions and electrolyte sprays out from the explosion-proof valve, the upwardly protruding clearance structure can initially constrain and guide the flow of electrolyte, thereby reducing the possibility of electrolyte spreading to the surrounding area from the source.

[0009] The first baffles are spaced apart on the support plate body along the second direction and are located on opposite sides of the clearance structure. The first baffles can extend along the first direction and can constrain the diffusion of electrolyte in the second direction. When the cover plate body is installed on the upper part of the support plate structure, the cover plate body covers the open area enclosed by the clearance structure and the first baffles on both sides, and together with each first baffle of the support plate structure and the outer peripheral wall of the clearance structure, forms a top-closed drainage channel. This not only restricts the electrolyte within a defined flow path, but also completely prevents the electrolyte from splashing and spreading upwards, thus ensuring the directional discharge of electrolyte.

[0010] The bypass structure is connected to the drainage channel, allowing the electrolyte ejected from the battery to pass through the explosion-proof valve and the bypass structure in sequence, directly entering the drainage channel formed by the outer peripheral wall of the bypass structure, the first baffle, and the cover plate. This ensures that the electrolyte is generated and discharged within the isolation channel between the cover plate and the support plate structure, achieving physical isolation from the battery area. This prevents the electrolyte from the faulty battery from spreading to the electrode areas of adjacent batteries, which could lead to accidents such as high temperature and short circuits. This significantly reduces the risk of thermal runaway and correspondingly reduces the accident range of the battery module.

[0011] In some embodiments, the cover body includes a protrusion and a first ramp, the protrusion being spaced apart along a third direction, the end of the protrusion being bent along a second direction to form the first ramp, and the height of the first ramp near the protrusion decreasing from the end of the first ramp away from the protrusion.

[0012] In some embodiments, the cover plate further includes a plurality of second baffles, which are spaced apart along the first direction on the end face of the cover plate body facing the battery. The second baffles extend along the second direction, the clearance structure is located between two adjacent second baffles, and the second baffles contact or abut against the support plate body.

[0013] In some embodiments, the clearance structure has notches at its ends along the second direction, and the clearance structure communicates with the drainage channel through the notches.

[0014] In some embodiments, the support plate structure further includes a second ramp portion, which is connected between the edge of the notch and the bottom of the drainage channel, and the height of the end of the second ramp portion closer to the notch is greater than the height of the end of the second ramp portion farther from the notch.

[0015] In some embodiments, the support plate structure further includes a connecting portion and a third ramp portion, a plurality of the connecting portions are spaced apart along the first direction, and two adjacent clearance structures are connected by the connecting portions; The third ramp is connected between the end of the connecting part along the second direction and the bottom of the drain channel.

[0016] In some embodiments, the cover plate further includes a positioning structure, two positioning structures are spaced apart along the second direction on the end face of the cover plate body facing the battery, and each positioning structure is disposed opposite to the corresponding first baffle; the positioning structure includes a first reinforcing rib and a second reinforcing rib distributed spaced apart along the second direction, a groove is formed between the first reinforcing rib and the second reinforcing rib, and the first baffle is embedded in the groove.

[0017] In some embodiments, the support plate structure further includes a boss structure, which extends along the first direction and is fixed to the support plate body. The boss structure is provided on the side of the first baffle away from the drainage channel. The boss structure, the support plate body and the first baffle form a wire groove, which is used to place wire harnesses.

[0018] In some embodiments, the support plate structure further includes wire ties, and a plurality of wire ties are spaced apart along the first direction on the side wall of the first baffle facing the wire groove, the wire ties being used to fix the wire harness.

[0019] In some embodiments, the support plate structure further includes a first snap-fit ​​member disposed on the support plate body and spaced apart from the boss structure along the first direction; the cover plate further includes a second snap-fit ​​member disposed on the end face of the cover plate body facing the battery, and the second snap-fit ​​member snaps into the first snap-fit ​​member.

[0020] In some embodiments, the support plate body is provided with a plurality of positioning holes spaced apart along the first direction, the positioning holes being used for fitting and connecting with the terminals of the battery.

[0021] In some embodiments, the boss structure includes a first boss, a second boss, and a third boss spaced apart along the first direction. The first boss and the third boss are both right-angle plate structures. The first boss, the second boss, and the third boss enclose an installation area. The installation area is used to install a conductive busbar, which is electrically connected to the terminals of two adjacent batteries.

[0022] In some embodiments, the support plate structure further includes a positioning post, which is fixed to the support plate body and located within the installation area. The conductive bar is provided with a positioning hole, and the positioning post is inserted into the positioning hole.

[0023] In some embodiments, the support plate structure further includes a snap-fit ​​structure disposed on the support plate body, the conductive bar is provided with a card interface, and the snap-fit ​​structure is engaged with the card interface.

[0024] In some embodiments, the support assembly further includes an exhaust and drainage pipe, the end of the support plate structure along the first direction is connected to the exhaust and drainage pipe, and the exhaust and drainage pipe communicates with the end of the drainage channel.

[0025] A second aspect of this application provides a battery module, which adopts the following technical solution: A battery module includes multiple batteries and a support assembly as described above.

[0026] The battery module has at least all the technical effects of the bracket assembly, which will not be elaborated here.

[0027] In some embodiments, the battery module further includes a heat insulation structure. The heat insulation structure is provided between two adjacent batteries arranged along a first direction; and / or, the heat insulation structure is provided on the side of the battery along a second direction.

[0028] A third aspect of this application provides a battery pack, which adopts the following technical solution: A battery pack, comprising the support assembly as described above or the battery module as described above.

[0029] The battery pack has at least all the technical effects of the bracket assembly or battery module, which will not be elaborated here.

[0030] A fourth aspect of this application provides an electrical appliance, which adopts the following technical solution: An electrical device comprising a battery pack as described above.

[0031] The electrical equipment has at least all the technical benefits of a battery pack, which will not be elaborated here. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only involve some embodiments of this application and are not intended to limit this application.

[0033] Figure 1 This is a schematic diagram of the structure of a battery module according to some embodiments of this application.

[0034] Figure 2 This is one of the partial structural schematic diagrams of a support assembly according to some embodiments of this application.

[0035] Figure 3 For along Figure 2 A schematic diagram of the cross-sectional structure of section line GG.

[0036] Figure 4 This is a second partial structural schematic diagram of a support assembly according to some embodiments of this application.

[0037] Figure 5 This is a schematic diagram of the structure of a cover plate according to some embodiments of this application.

[0038] Figure 6 This is a structural schematic diagram of a support plate structure according to some embodiments of this application.

[0039] Figure 7 for Figure 6 Enlarged view of section A.

[0040] Figure 8 This is a partial structural schematic diagram of a support plate structure according to some embodiments of this application.

[0041] Figure 9 This is a third partial structural schematic diagram of a support assembly according to some embodiments of this application.

[0042] Figure 10 This is one of the partial structural schematic diagrams of a battery module according to some embodiments of this application.

[0043] Figure 11 This is a second partial structural schematic diagram of a battery module according to some embodiments of this application.

[0044] Figure 12 This is a structural schematic diagram of a support assembly according to some embodiments of this application.

[0045] Figure 13 This is the third partial structural schematic diagram of a battery module according to some embodiments of this application.

[0046] Explanation of reference numerals in the attached figures: 100-Support plate structure; 1001-Drainage channel; 1002-Wire groove; 1003-Positioning port; 110-Support plate body; 120-Avoidance port structure; 121-Notch; 130-First baffle; 140-Second ramp; 150-Connecting part; 160-Third ramp; 170-Boss structure; 171-First boss; 172-Second boss; 173-Third boss; 180-Wire tie; 191-First snap-fit; 192- Positioning post; 193-Snap-on structure; 200-Cover plate; 210-Cover plate body; 211-Protrusion; 212-First slope; 213-Straight plate; 220-Second baffle; 230-Positioning structure; 231-First reinforcing rib; 232-Second reinforcing rib; 240-Second snap-fit; 300-Exhaust and drain pipe; 400-Battery; 410-Terminal post; 500-Conductive bar; 510-Positioning hole; 520-Snap-fit ​​interface; 600-Heat insulation structure. Detailed Implementation

[0047] To make the above-mentioned objects, features, and advantages of this application more apparent and understandable, specific embodiments of this application are described in detail below with reference to the accompanying drawings. Although some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the accompanying drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0048] In the accompanying drawings, the X-axis represents the horizontal direction and is designated as left and right positions, with the positive direction of the X-axis representing the right side and the negative direction representing the left side; the Y-axis represents the front and back positions, with the positive direction of the Y-axis representing the front and the negative direction representing the back; the Z-axis represents the vertical direction, i.e., the up and down positions, with the positive direction of the Z-axis representing the top and the negative direction representing the bottom. It should be noted that the aforementioned representations of the X, Y, and Z axes are merely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0049] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the description below. It should be noted that the concepts of "first," "second," etc., mentioned in this application are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0050] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings of this application are open-ended terms. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but is not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0051] It should be noted that the terms "one" and "more" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0052] In the description of this application, it should be understood that the terms "center", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0055] Figure 1 This is a schematic diagram of the structure of a battery module according to some embodiments of this application. Figure 2 This is one of the partial structural schematic diagrams of a support assembly according to some embodiments of this application. Figure 3 For along Figure 2 A schematic diagram of the cross-sectional structure of section line GG. Figure 6 This is a structural schematic diagram of a support plate structure according to some embodiments of this application.

[0056] One or more embodiments of this application disclose a support assembly. (See also...) Figures 1 to 3 , Figure 6A bracket assembly is used to be mounted on the battery 400 of the battery module and located on the electrode side of the battery 400. The bracket assembly includes a support plate structure 100 and a cover plate 200. The support plate structure 100 includes a support plate body 110, a plurality of clearance structures 120 and a first baffle 130. The support plate body 110 is used to be mounted above the battery 400. The plurality of clearance structures 120 are distributed at intervals along a first direction on the support plate body 110. The clearance structures 120 are used to correspond to and communicate with the explosion-proof valve of the battery 400. The clearance structures 120 protrude and extend relative to the support plate body 110 in a direction away from the battery 400. The first baffle 130 is spaced apart on the support plate body 110 along the second direction and is located on opposite sides of the clearance structure 120. The cover plate 200 includes a cover plate body 210, which is connected to the end face of the support plate structure 100 away from the battery 400. The peripheral wall of the clearance structure 120, each of the first baffles 130 and the cover plate body 210 respectively form a drain channel 1001, and the clearance structure 120 is connected to the drain channel 1001.

[0057] In at least one embodiment, the support plate body 110 being mounted on one side of the upper electrode of the battery 400 means that the support plate body 110 is positioned along the battery 400. Figure 1 and Figure 3 On the positive Z-axis side of the coordinate system. The arrangement direction of the multiple clearance structures 120 is parallel to the arrangement direction of the multiple batteries 400, and all are parallel to the first direction, wherein the first direction is parallel to... Figure 1 In the coordinate system, the Y-axis is parallel and can also refer to the length direction (or front-to-back direction) of the support plate structure 100. Each clearance structure 120 corresponds vertically to and is connected to the explosion-proof valve below it.

[0058] The fact that the clearance structure 120 protrudes and extends in a direction away from the battery 400 relative to the support plate body 110 means that the clearance structure 120 has a certain height and can protrude from the support plate body 110 in a direction away from the battery 400.

[0059] The positive and negative terminals of each battery 400 are arranged in a direction parallel to the arrangement direction of the two first baffles 130, and both are parallel to the second direction, wherein the second direction is parallel to... Figure 1 In the coordinate system, the X-axis is parallel and can also refer to the width direction (or left-right direction) of the support plate structure 100. The cover plate body 210 is connected to the upper surface of the support plate structure 100. First baffles 130 are respectively provided on opposite sides of the clearance structure 120.

[0060] By adopting the above technical solution, the battery module includes a plurality of batteries 400 arranged along a first direction. Each battery 400 has an explosion-proof valve and electrical terminals (i.e., positive and negative terminals distributed at intervals along a second direction). The entire support plate structure 100 can be located between the positive and negative terminals of the battery 400. A plurality of clearance structures 120 are distributed at intervals along the first direction on the support plate body 110. Each clearance structure 120 corresponds to and is connected to the explosion-proof valve position of each battery 400.

[0061] The clearance structure 120 extends protruding away from the battery 400 relative to the support plate body 110, so that the clearance structure 120 forms a raised "dam" above the explosion-proof valve of the battery 400. When the battery 400 malfunctions and the electrolyte sprays out from the explosion-proof valve, the upwardly protruding clearance structure 120 can initially constrain and guide the flow of the electrolyte, so as to reduce the possibility of the electrolyte spreading to the surroundings from the source.

[0062] Two first baffles 130 are spaced apart on the support plate body 110 along the second direction and are located on opposite sides of the clearance structure 120. The first baffles 130 can extend along the first direction and can constrain the diffusion of electrolyte in the second direction. When the cover plate body 210 is installed on the upper part of the support plate structure 100, the cover plate body 210 covers the open area enclosed by the clearance structure 120 and the first baffles 130 on both sides, and together with each first baffle 130 of the support plate structure 100 and the outer peripheral wall of the clearance structure 120, forms a top-closed drainage channel 1001. This not only restricts the electrolyte within a defined flow path, but also completely prevents the electrolyte from splashing and spreading upwards, ensuring that the electrolyte is discharged in a directional manner.

[0063] The bypass structure 120 is connected to the drain channel 1001, so that the electrolyte sprayed out from inside the battery 400 passes through the explosion-proof valve and the bypass structure 120 in sequence, and directly enters the drain channel 1001 formed by the outer peripheral wall of the bypass structure 120, the first baffle 130 and the cover plate 200. This ensures that the electrolyte is generated and discharged within the isolation channel between the cover plate 200 and the support plate structure 100, achieving physical isolation from the battery 400 area. This prevents the electrolyte of the faulty battery 400 from spreading to the electrode areas of other adjacent batteries 400, which could cause accidents such as high temperature and short circuit in the battery 400. This significantly reduces the risk of thermal runaway and correspondingly reduces the accident range of the battery module.

[0064] In some embodiments, refer to Figure 3The cover plate body 210 includes a protrusion 211 and a first ramp 212. The protrusion 211 and the clearance structure 120 are spaced apart along a third direction. The end of the protrusion 211 along the second direction is bent to form the first ramp 212. The height of the first ramp 212 near the protrusion 211 decreases from the end of the first ramp 212 away from the protrusion 211.

[0065] In at least one embodiment, the protrusion 211 may be located in the middle of the entire cover body 210, and the two ends of the protrusion 211 along the second direction may be bent obliquely downward to form a first slope 212; the protrusion 211 and the first slope 212 may be constructed as an integral cover body 210.

[0066] The third direction can be combined with Figure 3 In the coordinate system, the Z-axis is parallel and can refer to the vertical or height direction of the support assembly.

[0067] The protrusion 211 can be a straight plate or an arc-shaped plate with a certain curvature in the middle.

[0068] The decrease in height of the first slope portion 212 from the end near the protrusion 211 to the end away from the protrusion 211 can be understood as the first slope portion 212 being higher than the end away from the protrusion 211, and the height of the first slope portion 212 decreasing from the end near the protrusion 211 to the end away from the protrusion 211.

[0069] By adopting the above technical solution, the cover plate 200 can limit the ejection path of the electrolyte during battery thermal runaway. When the electrolyte touches the protrusion 211 on the inner sidewall of the cover plate 200 (the sidewall of the cover plate body 210 facing the battery 400), the end of the protrusion 211 is bent along the second direction to form the first slope 212, so that the inner surface from the protrusion 211 to the first slope 212 is a smooth and continuous curved surface or plane. This eliminates the steps or gaps that may accumulate electrolyte or hinder flow, making the electrolyte flow smoother and without dead corners. Under the influence of gravity, the first slope 212 guides the electrolyte at the protrusion 211 to the drain channel 1001, so as to clarify the flow path of the electrolyte and prevent the electrolyte of the faulty battery 400 from spreading to other battery 400 areas, further isolating the pressure relief areas of each battery 400.

[0070] Figure 4 This is a second partial structural schematic diagram of a support assembly according to some embodiments of this application. Figure 5 This is a structural schematic diagram of a cover plate 200 according to some embodiments of this application.

[0071] In some embodiments, refer to Figure 4 and Figure 5 The cover plate 200 further includes a plurality of second baffles 220, which are spaced apart along the first direction on the end face of the cover plate body 210 facing the battery. The second baffles 220 extend along the second direction. The clearance structure 120 is located between two adjacent second baffles 220, and the second baffles 220 contact or abut against the support plate body 110.

[0072] In at least one embodiment, a plurality of second baffles 220 are spaced apart along a first direction and fixed to the inner end face of the cover plate body 210.

[0073] Each second baffle 220 can extend along the second direction, and the second baffle 220 and the cover plate body 210 can be fixedly connected by integral molding. Since the second baffle 220 is provided between two adjacent avoidance structure 120, the number of second baffles 220 can be one less than the number of explosion-proof valves (or avoidance structures).

[0074] When the cover plate 200 is connected to the support plate structure 100, the bottom of the second baffle 220 can contact or have a certain abutting force with the upper surface of the support plate body 110.

[0075] By adopting the above technical solution, the second baffle 220 is arranged at a certain interval along the battery arrangement direction (first direction), dividing the continuous space below the cover plate 200 into multiple sections in the first direction (length direction). Each section corresponds to the drain area of ​​the explosion-proof valve of each battery 400, providing a structural framework for physically dividing the drain area corresponding to each battery in space. This not only prevents the electrolyte from flowing longitudinally along the battery arrangement direction in the drain channel 1001, but also ensures that the path of electrolyte ejection can only be in the area of ​​a single uncontrolled battery, improving the isolation effect between the electrolyte and the external battery 400.

[0076] The second baffle 220 extends along the second direction, so that the second baffle 220 can extend from one end of the inner wall of the drain channel 1001 to the other end, forming a continuous, uninterrupted dividing surface, preventing the electrolyte from flowing around the end of the first baffle 130, and ensuring the independence of each segment.

[0077] Figure 6 This is a structural schematic diagram of the support plate structure 100 according to some embodiments of this application. Figure 7 for Figure 6 Enlarged view of section A.

[0078] In some embodiments, refer to Figure 6 and Figure 7The clearance structure 120 is provided with notches 121 at its ends along the second direction, and the clearance structure 120 is connected to the drainage channel 1001 through the notches 121.

[0079] In at least one embodiment, the clearance structure 120 has a notch 121 at at least one end along the second direction, the notch 121 being connected to the corresponding drainage channel 1001, and the notch 121 being located at the top of the clearance structure 120.

[0080] The gap 121 can be located below the support plate body 110 and above the bottom wall of the drainage channel 1001.

[0081] By adopting the above technical solution, when the electrolyte is injected into the relief port structure 120, it can be immediately diverted to the drainage channels 1001 on the left and right sides through the lateral notch 121. This significantly accelerates the diversion speed of a large amount of liquid in the initial stage of pressure relief, reduces the accumulation and residence time inside the relief port structure 120, and reduces the risks that may be caused by local liquid accumulation (such as gas accumulation and pressure fluctuation).

[0082] In some embodiments, refer to Figure 7 The support plate structure 100 further includes a second ramp portion 140, which is connected between the edge of the notch 121 and the bottom of the drain channel 1001, and the height of the end of the second ramp portion 140 near the notch 121 is greater than the height of the end of the second ramp portion 140 away from the notch 121.

[0083] In at least one embodiment, a second ramp portion 140 may be provided at the end of the edge of the notch 121 along the second direction, and the second ramp portion 140 is connected to the edge of the notch 121 and the corresponding drainage channel.

[0084] The second ramp portion 140 is inclined in such a direction that the end of the second ramp portion 140 near the notch 121 extends downward in a direction away from the notch 121 and connects to the edge of the notch 121 and the bottom of the drain channel 1001.

[0085] By adopting the above technical solution, the second ramp 140 is set at a certain angle relative to the support plate body 110, filling the possible "height difference" or "cliff" between the lower edge of the notch 121 and the bottom of the drain channel. Without this second ramp 140, the electrolyte would drip or fall directly to the lower bottom of the tank after flowing out of the notch 121, which could easily cause splashing, backflow, or form a "dead corner" where the electrolyte would stagnate at the drop point. This setting not only guides the electrolyte from the notch 121 to the designated bottom area of ​​the tank, preventing the liquid from spreading irregularly in the area below the notch 121, and ensuring that all electrolyte is guided in an orderly manner to the final collection and discharge direction, greatly reducing the risk of liquid stagnation due to surface tension or adhesion; but also physically prevents the electrolyte from flowing back from the bottom area of ​​the drain channel 1001 to the notch 121, realizing the "one-way valve" effect of electrolyte flow, strengthening the isolation of the pressure relief space of each battery 400, and protecting other batteries from electrolyte damage.

[0086] Each cell's notch 121 is higher than the bottom of the tank, and the notches 121 are independent of each other and do not interfere with each other. The electrolyte ejected from a single cell in a runaway manner will not flow into adjacent cells.

[0087] In some embodiments, refer to Figure 7 The support plate structure 100 further includes a connecting portion 150 and a third ramp portion 160. A plurality of the connecting portions 150 are distributed at intervals along the first direction, and two adjacent clearance structures 120 are connected by the connecting portions 150. The third ramp portion 160 is connected between the end of the connecting portion 150 along the second direction and the bottom of the drain channel 1001.

[0088] In at least one embodiment, the connecting part 150 can serve as a connecting structure for two adjacent clearance structures 120. The connecting part 150 can form an integral structure with the support plate body 110. The connecting part 150 can be slightly lower than the top of the clearance structure 120 and higher than the bottom of the drain channel 1001.

[0089] A third ramp portion 160 may be provided at the end of the connecting portion 150 along the second direction, and the third ramp portion 160 is connected to the end of the connecting portion 150 along the second direction and the corresponding drainage channel.

[0090] The third ramp portion 160 is inclined in such a direction that the end of the third ramp portion 160 near the connecting portion 150 extends downward in a direction away from the connecting portion 150 and connects to the end of the connecting portion 150 and the bottom of the drain channel 1001.

[0091] By adopting the above technical solution, two adjacent clearance structures 120 are connected by the connecting part 150, so that the "connecting part 150" is actually the original or thickened area on the support plate body 110 located between the two protruding clearance structures 120. It mechanically connects a series of independent clearance structures 120 into an integral frame, which significantly improves the mechanical strength of the entire support plate structure 100 in the battery 400 arrangement direction (first direction) against bending and torsion.

[0092] The third ramp portion 160 is connected between the end of the connecting portion 150 along the second direction and the bottom of the drain channel 1001, so that an inclined transition surface is constructed at the end of the connecting portion 150 facing the bottom of the drain channel 1001. This allows the electrolyte between the two adjacent clearance structures 120 to be quickly guided to the drain channel 1001 through the third ramp portion 160, so as to avoid long-term chemical corrosion of the support plate structure 100 (especially plastic) due to long-term retention and extend the service life of the component.

[0093] Furthermore, the third slope portion 160 and the second slope portion 140 together form a complete, inwardly and downwardly inclined "collecting funnel" on the side wall of the drain channel 1001. This allows the electrolyte to be efficiently collected and guided to the main discharge channel at the bottom of the drain channel 1001, regardless of whether it comes from the clearance structure 120 (through the notch 121) or from the middle area, thereby improving the collection and discharge efficiency of the entire drain channel 1001.

[0094] In some embodiments, refer to Figure 4 and Figure 5 The cover plate 200 further includes a positioning structure 230. Two positioning structures 230 are spaced apart along the second direction on the end face of the cover plate body 210 facing the battery 400. Each positioning structure 230 is opposite to the corresponding first baffle 130. The positioning structure 230 includes a first reinforcing rib 231 and a second reinforcing rib 232 spaced apart along the second direction. A groove is formed between the first reinforcing rib 231 and the second reinforcing rib 232. The first baffle 130 is embedded in the groove.

[0095] In at least one embodiment, two positioning structures 230 distributed at intervals along the second direction may be provided on the bottom surface of the cover body 210 facing the battery 400, and each positioning structure 230 may correspond vertically to the position of the first baffle 130.

[0096] Each positioning structure 230 includes a first reinforcing rib 231 and a second reinforcing rib 232 distributed at intervals along a second direction. Both the first reinforcing rib 231 and the second reinforcing rib 232 extend along the second direction, and a groove is formed between the first reinforcing rib 231 and the second reinforcing rib 232. At least a portion of the first baffle 130 is embedded in the groove.

[0097] By adopting the above technical solution, when assembling the cover plate 200, the operator or equipment can intuitively and quickly align the positioning structure 230 of the cover plate 200 with the first baffle 130 of the support plate structure 100. This greatly simplifies the assembly process, improves assembly efficiency, and effectively prevents rework or poor sealing caused by misalignment. Moreover, the engagement between the slot and the first baffle 130 can also limit the offset and swaying of the cover plate 200 and the support plate structure 100 in the second direction, thereby improving the assembly stability of the two.

[0098] The first reinforcing rib 231 and the second reinforcing rib 232, as protruding ribs of the cover plate 200, significantly enhance the local rigidity and deformation resistance of the cover plate 200 in the positioning structure 230 area, making it less prone to collapse or deformation when subjected to internal pressure or external impact, thereby protecting the shape integrity of the slot. When the first reinforcing rib 231 and the second reinforcing rib 232 come into contact with the first baffle 130 of the support plate structure 100, they form two parallel sealing lines, which provides double sealing protection. Even if the contact surface of one reinforcing rib is not tightly sealed due to manufacturing tolerances or slight deformation, the other reinforcing rib can still block electrolyte vapor or tiny splashing droplets. In short, it forms double protection for the electrolyte in the drain channel 1001, avoiding interference and damage to the wiring harness in the wire groove 1002 of the support assembly.

[0099] Figure 8 This is a partial structural schematic diagram of a support plate structure 100 according to some embodiments of this application.

[0100] In some embodiments, refer to Figure 8 The support plate structure 100 further includes a boss structure 170, which extends along the first direction and is fixed to the support plate body 110. The boss structure 170 is provided on the side of the first baffle 130 away from the drainage channel 1001. The boss structure 170, the support plate body 110 and the first baffle 130 form a wire groove 1002, which is used to place wire harnesses.

[0101] In at least one embodiment, the support plate structure 100 may include two boss structures 170, and at least one of the boss structures 170 is respectively provided on the side of the first baffle 130 away from the drainage channel 1001.

[0102] Since the boss structure 170 and the first baffle 130 are spaced apart on the support plate body 110 along the second direction, a wire groove 1002 can be formed between the boss structure 170, the first baffle 130 and the support plate body 110. The wire groove 1002 can be used to install wire harnesses. Therefore, the first baffle 130 can be used as a plate-shaped or protruding structure for separating the drain channel 1001 and the wire groove 1002.

[0103] Reference Figure 3 The cover plate body 210 also includes a straight plate portion 213. A first ramp portion 212 extends along a second direction to form the straight plate portion 213. The protrusion 211, the first ramp portion 212, and the straight plate portion 213 can be constructed as an integral cover plate body 210. The straight plate portion 213 can be positioned above the wire groove 1002 to enclose the wire harness within the wire groove 1002.

[0104] The boss structure 170 can be a raised "wall" or "ridge" that is set on the support plate body 110 and distributed in segments.

[0105] By adopting the above technical solution, the first baffle 130 simultaneously serves as a "shared partition wall" separating the drain channel 1001 and the wire trough 1002, realizing the functional reuse of the first baffle 130 and saving space and materials. Utilizing the existing height and strength of the first baffle 130 itself, a ready-made and reliable lateral protective wall is provided for the wire trough 1002, physically isolating it from the dangerous drain channel 1001, effectively preventing electrolyte contamination of the wire harness and causing short circuits, signal failures, or insulation degradation.

[0106] The cable tray 1002 is used to accommodate and guide the wiring harness for voltage / temperature sampling, which fundamentally avoids the messy state of the wiring harness being scattered and stacked on top of the battery 400.

[0107] In some embodiments, refer to Figure 8 The support plate structure 100 also includes wire ties 180, and a plurality of wire ties 180 are spaced apart along the first direction on the side wall of the first baffle 130 facing the wire groove 1002. The wire ties 180 are used to fix the wire harness.

[0108] In at least one embodiment, at least one wire tie 180 may be provided on the side wall of each first baffle 130 facing the wire groove 1002, and the plurality of wire tie 180 may be distributed at intervals along the first direction.

[0109] The wire harness can be fixed in the wire groove 1002 by passing a cable tie through the cable tie buckle 180 and connecting it to the wire harness.

[0110] By adopting the above technical solution, several wire ties 180 are arranged in the wire trough 1002, which is beneficial to the fixation of the wire harness and the constraint of its direction.

[0111] Figure 9 This is a third partial structural schematic diagram of a support assembly according to some embodiments of this application.

[0112] In some embodiments, refer to Figure 9 The support plate structure 100 further includes a first snap-fit ​​member 191, which is disposed on the support plate body 110 and spaced apart from the boss structure 170 along the first direction; the cover plate 200 further includes a second snap-fit ​​member 240, which is disposed on the end face of the cover plate body 210 facing the battery 400, and the second snap-fit ​​member 240 snaps into the first snap-fit ​​member 191.

[0113] In at least one embodiment, the first snap-fit ​​member 191 may be spaced apart from the boss structure 170 along a first direction, and the first snap-fit ​​member 191 may be constructed as an integral structure with the support plate body 110.

[0114] The second snap-fit ​​member 240 can be fixed to the end face of the cover body 210 facing the battery 400. In other words, the second snap-fit ​​member 240 can be located at the bottom edge of the cover body 210.

[0115] If the first card connector 191 is a snap-fit ​​structure, then the second card connector 240 is a card slot structure, such as... Figure 9 As shown; if the first card connector 191 is a card slot structure, then the second card connector 240 is a snap-fit ​​structure.

[0116] By adopting the above technical solution, the second snap-fit ​​component 240 is pressed into and locked into the first snap-fit ​​component 191, and the two are mechanically interlocked, so that the cover plate 200 and the support plate structure 100 are constrained in the vertical and / or horizontal directions, which can also improve the assembly and disassembly efficiency of the two.

[0117] Figure 9 This is the third partial structural schematic diagram of a support assembly according to some embodiments of this application. Figure 10 This is one of the partial structural schematic diagrams of a battery module according to some embodiments of this application.

[0118] In some embodiments, refer to Figure 9 and Figure 10 The support plate body 110 is provided with a plurality of positioning ports 1003 spaced apart along the first direction, and the positioning ports 1003 are used to be adapted to connect with the terminal post 410 of the battery 400.

[0119] In at least one embodiment, a plurality of positioning ports 1003 may be spaced apart along a first direction.

[0120] The positioning port 1003 can be used to insert the terminals 410 of two adjacent batteries 400, which can be the positive or negative terminal of the battery 400. The positioning port 1003 can be U-shaped.

[0121] By adopting the above technical solution, when the terminal post 410 of the battery 400 is engaged with the positioning port 1003, the side of the positioning port 1003 abuts or contacts the side of the terminal post 410 of the battery 400, thereby constraining and positioning the support plate structure 100 along the first direction through the terminal post 410 of the battery 400.

[0122] Figure 8 This is a partial structural schematic diagram of the support plate structure 100 according to some embodiments of this application. Figure 10 This is one of the partial structural schematic diagrams of a battery module according to some embodiments of this application.

[0123] In some embodiments, refer to Figure 8 and Figure 10 The boss structure 170 includes a first boss 171, a second boss 172, and a third boss 173 spaced apart along the first direction. The first boss 171 and the third boss 173 are right-angle plate structures. The first boss 171, the second boss 172, and the third boss 173 form an installation area. The installation area is used to install a conductive busbar 500. The conductive busbar 500 is electrically connected to the terminals 410 of two adjacent batteries 400.

[0124] In at least one embodiment, the conductive bus 500 is a conductive connector for the terminals 410 of two adjacent batteries 400. Specifically, the positive terminal (positive terminal) of one battery 400 is electrically connected to the negative terminal (negative terminal) of the adjacent battery 400 through the conductive bus 500.

[0125] The second boss 172 may be a protruding structure extending along the first direction and disposed on the support plate body 110, and the first boss 171 and the third boss 173 may be a right-angle plate structure (or an L-shaped plate structure) disposed on the support plate body 110.

[0126] By adopting the above technical solution, the first boss 171, the second boss 172 and the third boss 173 form an installation area, which can be used as the installation area for the conductive bus 500. The conductive bus 500 is electrically connected to the terminal post 410 of the adjacent battery 400 so that the conductive bus 500 can constrain and position the support plate structure 100 in the first direction. Moreover, the support plate body 110 provides support for the conductive bus 500 and insulation between it and the battery 400.

[0127] In some embodiments, refer to Figure 9 and Figure 10The support plate structure 100 further includes a positioning post 192, which is fixed to the support plate body 110 and located within the installation area. The conductive busbar 500 is provided with a positioning hole 510, and the positioning post 192 is inserted into the positioning hole 510.

[0128] In at least one embodiment, the positioning post 192 is a boss integrally fixed on the support plate body 110, and the conductive busbar 500 has a positioning hole 510 on its surface. The inner diameter of the positioning hole 510 is slightly larger than the outer diameter of the positioning post 192 so that the positioning post 192 can be smoothly inserted into the positioning hole 510.

[0129] The number of positioning pins 192 can be multiple. The cross-sectional shape of the positioning pins 192 matches the shape of the positioning holes 510. For example, if the cross-sectional shape of the positioning pins 192 is circular, then the positioning holes 510 are circular holes. Figure 10 If the cross-sectional shape of the positioning post 192 is polygonal, then the positioning hole 510 is a polygonal hole.

[0130] By adopting the above technical solution, positioning posts 192 are provided on the support plate body 110, and positioning holes 510 are opened in the corresponding areas of the conductive busbar 500. The design of multiple positioning posts 192 realizes the limiting and fixing of the conductive busbar 500 on the plane.

[0131] Figure 11 This is a second partial structural schematic diagram of a battery module according to some embodiments of this application.

[0132] In some embodiments, refer to Figure 11 The support plate structure 100 also includes a snap-fit ​​structure 193 disposed on the support plate body 110, and the conductive busbar 500 is provided with a card interface 520, and the snap-fit ​​structure 193 is snapped into the card interface 520.

[0133] In at least one embodiment, the conductive busbar 500 and the support plate structure 100 can be connected by a snap-fit ​​method. For example, a snap-fit ​​structure 193 can be provided on the support plate body 110, and a card interface 520 can be opened on the conductive busbar 500. The snap-fit ​​structure 193 can be inserted into the card interface 520.

[0134] The snap-fit ​​structure 193 may include two plugs spaced apart along a first direction, and the snap-fit ​​interface 520 of the conductive bar 500 engages with the plugs of the snap-fit ​​structure 193. The plugs may be made of a tough material that deforms when subjected to external pressure and returns to its original shape when the external force is removed.

[0135] By adopting the above technical solution, the snap-fit ​​interface 520 of the conductive busbar 500 engages with the snap-fit ​​structure 193 disposed on the support plate body 110, which improves the ease of assembly and disassembly of the conductive busbar 500 and the support plate structure 100. Since the snap-fit ​​structure 193 may include two plugs spaced apart along the first direction, during the installation of the conductive busbar 500, the local deformation of the two plugs of the snap-fit ​​structure 193 allows the conductive busbar 500 to pass normally into the snap-fit ​​interface 520. After assembly, the conductive busbar 500 deforms and rebounds, causing the lower surface of the snap-fit ​​structure 193 to abut against the upper surface of the conductive busbar 500, thereby achieving vertical constraint of the conductive busbar 500.

[0136] Figure 12 This is a structural schematic diagram of a support assembly according to some embodiments of this application.

[0137] In some embodiments, refer to Figure 12 The support assembly further includes an exhaust and drainage pipe 300, the end of the support plate structure 100 along the first direction is connected to the exhaust and drainage pipe 300, and the exhaust and drainage pipe 300 is connected to the end of the drainage channel 1001.

[0138] In at least one embodiment, the support plate structure 100 can be connected to the exhaust and drain pipe 300 at at least one end along the first direction by means of snap-fit, screw-fit, or other methods.

[0139] The end of the drainage channel 1001 in the extending direction is connected to the exhaust and drainage pipe 300.

[0140] The exhaust and drainage pipe 300 matches the end shape of the drainage channel 1001. For example, the exhaust and drainage pipe 300 can be a rectangular pipe.

[0141] The exhaust and drain pipe 300 can be connected to external ventilation equipment to use the suction force of the ventilation equipment to discharge the combustible gas, electrolyte and other fluids released from the explosion-proof valve to the outside of the battery module, thereby reducing the risk of thermal runaway.

[0142] By adopting the above technical solution, the exhaust pipe 300 can be used as an outlet pipe structure for the combustible gas, electrolyte and other fluids released from the explosion-proof valve corresponding to the faulty battery to be discharged from the outside of the support assembly through the drainage channel 1001, ensuring the directionality of the discharge of combustible gas, electrolyte and other fluids, so as to avoid the problem of disorder in the fluid discharge process.

[0143] Figure 13 This is the third partial structural schematic diagram of a battery module according to some embodiments of this application.

[0144] This application also discloses a battery module in one or more embodiments. (See reference...) Figure 1 and Figure 13The battery module includes multiple batteries 400 and a bracket assembly as described in the above embodiment.

[0145] The battery module in this embodiment has the same beneficial effects as the bracket assembly described above compared to the prior art, and will not be repeated here.

[0146] In some embodiments, refer to Figure 13 The battery module also includes a heat insulation structure 600. The heat insulation structure 600 is provided between two adjacent batteries 400 arranged along a first direction; and / or, the heat insulation structure 600 is provided on the side of the battery 400 along a second direction.

[0147] In at least one embodiment, the thermal insulation structure 600 may be a plate-like structure made of thermal insulation material.

[0148] The surface of one battery 400 that is close to another battery 400 is the larger surface of battery 400, and the side surface of battery 400 along the second direction can be the smaller surface of battery 400.

[0149] A heat insulation structure 600 can be set between adjacent batteries 400 (larger surface) and outside the smaller surface of battery 400 to achieve all-round protection of battery 400, reduce the heat spread rate of battery 400, and enhance the safety factor of battery module design.

[0150] One or more embodiments of this application also disclose a battery pack. The battery pack includes the support assembly as described in the above embodiments, or includes the battery module as described in the above embodiments.

[0151] In some embodiments, the battery pack may include a plurality of battery modules, adjacent battery modules may be arranged along a second direction, and a support assembly may be provided on each battery module.

[0152] The beneficial effects of the battery pack in this embodiment compared to the prior art are the same as those of the bracket assembly or battery module described above, and will not be repeated here.

[0153] One or more embodiments of this application also disclose an electrical device. The electrical device includes a battery pack as described in the above embodiments.

[0154] In some embodiments, the electrical equipment may be electric vehicles, aircraft, energy storage cabinets, capacitor banks, etc., that require DC power from battery packs, without specific limitations.

[0155] The beneficial effects of the electrical equipment in this embodiment compared to the prior art are the same as those of the battery pack described above, and will not be repeated here.

[0156] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A support assembly for mounting on a battery (400) of a battery module and located on one side of the electrode terminals of the battery (400), characterized in that, The bracket assembly includes a support plate structure (100) and a cover plate (200). The support plate structure (100) includes a support plate body (110), a plurality of clearance structures (120), and a first baffle (130). The support plate body (110) is used to install on the battery (400). The plurality of clearance structures (120) are spaced apart on the support plate body (110) along a first direction. The clearance structures (120) are used to correspond to and communicate with the explosion-proof valve of the battery (400). The clearance structures (120) protrude and extend relative to the support plate body (110) in a direction away from the battery (400). The first baffle (130) is spaced apart on the support plate body (110) along the second direction and located on opposite sides of the clearance structure (120). The cover plate (200) includes a cover plate body (210). The cover plate body (210) is connected to the end face of the support plate structure (100) away from the battery (400). The peripheral wall of the clearance structure (120), each of the first baffles (130) and the cover plate body (210) respectively form a drain channel (1001). The clearance structure (120) is connected to the drain channel (1001).

2. The support assembly according to claim 1, characterized in that, The cover plate body (210) includes a protrusion (211) and a first ramp (212). The protrusion (211) and the clearance structure (120) are spaced apart along a third direction. The end of the protrusion (211) is bent along the second direction to form the first ramp (212). The height of the first ramp (212) decreases from the end of the first ramp (212) near the protrusion (211) to the end of the first ramp (212) away from the protrusion (211).

3. The support assembly according to claim 1, characterized in that, The cover plate (200) further includes a plurality of second baffles (220), which are spaced apart along the first direction on the end face of the cover plate body (210) facing the battery. The second baffles (220) extend along the second direction. The clearance structure (120) is located between two adjacent second baffles (220), and the second baffles (220) contact or abut against the support plate body (110).

4. The support assembly according to claim 1, characterized in that, The clearance structure (120) has notches (121) at its ends along the second direction, and the clearance structure (120) is connected to the drainage channel (1001) through the notches (121).

5. The support assembly according to claim 4, characterized in that, The support plate structure (100) further includes a second ramp (140), which is connected between the edge of the notch (121) and the bottom of the drain channel (1001), and the height of the end of the second ramp (140) near the notch (121) is greater than the height of the end of the second ramp (140) away from the notch (121).

6. The support assembly according to claim 4, characterized in that, The support plate structure (100) further includes a connecting part (150) and a third ramp part (160), a plurality of the connecting parts (150) are distributed at intervals along the first direction, and two adjacent clearance structures (120) are connected by the connecting parts (150); The third ramp (160) is connected between the end of the connecting part (150) along the second direction and the bottom of the drain channel (1001).

7. The support assembly according to claim 1, characterized in that, The cover plate (200) further includes a positioning structure (230). Two positioning structures (230) are spaced apart along the second direction on the end face of the cover plate body (210) facing the battery (400). Each positioning structure (230) is opposite to the corresponding first baffle (130). The positioning structure (230) includes a first reinforcing rib (231) and a second reinforcing rib (232) spaced apart along the second direction. A groove is formed between the first reinforcing rib (231) and the second reinforcing rib (232). The first baffle (130) is embedded in the groove.

8. The support assembly according to any one of claims 1 to 7, characterized in that, The support plate structure (100) further includes a boss structure (170), which extends along the first direction and is fixed to the support plate body (110). The boss structure (170) is provided on the side of the first baffle (130) away from the drainage channel (1001). The boss structure (170), the support plate body (110), and the first baffle (130) form a wire groove (1002), which is used to place wire harnesses.

9. The support assembly according to claim 8, characterized in that, The support plate structure (100) also includes wire ties (180), and a plurality of wire ties (180) are spaced apart along the first direction on the side wall of the first baffle (130) facing the wire groove (1002), and the wire ties (180) are used to fix the wire harness.

10. The support assembly according to claim 8, characterized in that, The support plate structure (100) further includes a first snap-fit ​​member (191), which is disposed on the support plate body (110) and spaced apart from the boss structure (170) along the first direction; the cover plate (200) further includes a second snap-fit ​​member (240), which is disposed on the end face of the cover plate body (210) facing the battery (400), and the second snap-fit ​​member (240) snaps into the first snap-fit ​​member (191).

11. The support assembly according to claim 8, characterized in that, The support plate body (110) is provided with a plurality of positioning ports (1003) spaced apart along the first direction, and the positioning ports (1003) are used to be adapted to connect with the terminal post (410) of the battery (400).

12. The support assembly according to claim 11, characterized in that, The boss structure (170) includes a first boss (171), a second boss (172) and a third boss (173) distributed at intervals along the first direction. The first boss (171) and the third boss (173) are right-angle plate structures. The first boss (171), the second boss (172) and the third boss (173) form an installation area. The installation area is used to install a conductive bus (500). The conductive bus (500) is electrically connected to the terminals (410) of two adjacent batteries (400).

13. The support assembly according to claim 12, characterized in that, The support plate structure (100) further includes a positioning post (192), which is fixed to the support plate body (110) and located within the installation area. The conductive bar (500) is provided with a positioning hole (510), and the positioning post (192) is inserted into the positioning hole (510).

14. The support assembly according to claim 12, characterized in that, The support plate structure (100) further includes a snap-fit ​​structure (193) disposed on the support plate body (110), and the conductive bar (500) is provided with a card interface (520), and the snap-fit ​​structure (193) is snapped into the card interface (520).

15. The support assembly according to claim 1, characterized in that, The support assembly also includes an exhaust and drainage pipe (300), the end of the support plate structure (100) along the first direction is connected to the exhaust and drainage pipe (300), and the exhaust and drainage pipe (300) is connected to the end of the drainage channel (1001).

16. A battery module, characterized in that, It includes a plurality of batteries (400) and a support assembly as described in any one of claims 1 to 15.

17. The battery module according to claim 16, characterized in that, The battery module also includes a heat insulation structure (600). The heat insulation structure (600) is provided between two adjacent batteries (400) arranged along a first direction; and / or, the heat insulation structure (600) is provided on the side of the battery (400) along a second direction.

18. A battery pack, characterized in that, Includes the bracket assembly as described in any one of claims 1 to 15, or the battery module as described in claim 16 or 17.

19. An electrical appliance, characterized in that, Includes the battery pack as described in claim 18.

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